Microsoft TCP/IP printing respools jobs

I am implementing TCP/IP printing in a MS Windows NT 4.0 environment. All workstations and servers are on SP5. TCP/IP printing is configured to print directly to Lexmark laser printers with integrated 10/100 Ethernet cards. Print jobs respool beforecompleting resulting in an “endless loop”. The print job will continue to restart indefinitely. The printers have the latest firmware updates from Lexmark. Network traffic passes through SMC hubs and/or Bay networks switches. I do NOT have a snifferavailable.